Dr. Koishi no Jiken Chart

Dr. Koishi no Jiken Chart(ドクター小石の事件カルテ)

When Dr. Koishi learns that two of his acquaintenaces have suddenly passed away, he uncovers a possible link between the two mysterious deaths. With his medical expertise under his belt, Dr. Koishi launches a private investigation to unveil the truth on their deaths. (Source: Drama Wiki)